To determine the genre of "Big Water" by Andrea Curtis, we would need to analyze the themes, setting, and elements present in the story. Based on the title and your mention of an excerpt, "Big Water" may suggest themes related to nature or environmental issues, which could fit into various genres.
If the story includes fantastical elements or creatures, it might lean towards fantasy. If it involves unraveling secrets or clues, it could be classified as mystery. If the characters go on a journey facing challenges or obstacles, it might be categorized as adventure. If it deals with futuristic technology or concepts related to science, it could fall under science fiction.
Without specific details from the excerpt, it's difficult to choose the correct genre. However, if I were to make a general assumption based on the title, I would lean towards D) science fiction, especially if it involves themes related to climate change or environmental sustainability. Please confirm the details of the story if you'd like a more accurate answer.